Daniel Williams
Family Medicine Physician · Libby, MT
Daniel Williams is a family medicine physician with a practice address in Libby, Montana, and NPI 1184155442, issued on Mar 27, 2017. Check the license (Montana MED-PHYS-LIC-86997, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Daniel Williams
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MED-PHYS-LIC-86997 MT
Self-reported in NPPES; status is on the state search - Practice location
- 320 E 2ND St, Libby, MT 59923
- Phone
- (406) 283-6919
- Enumerated
- Mar 27, 2017
- Record last updated
- Sep 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201005002581); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 320 E 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Daniel Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license MED-PHYS-LIC-86997Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average family medicine physician in 2024
5,414 Medicare Part D claims for 379 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 400 claims were for opioids.
Most prescribed
- Atorvastatin Calcium354 claims
- Lisinopril222 claims
- Metformin Hcl185 claims
- Omeprazole169 claims
- Losartan Potassium163 claims
- Hydrocodone-Acetaminophen161 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Lincoln County Community Health Center IncLibby, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Williams among 775 family medicine physician records in Montana
Daniel Williams is one of 775 family medicine physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 84% of them.
- NPI issued2017 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2017 · median 2007 among the 464 with a school on file
- Record last updated2020 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family medicine physician records list a practice address in Libby
They are 11 of the 139 NPPES records with a practice address in Libby, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Libby → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Charles Black, MDLibby, MT 599231356407902
- Jane Borish, MDLibby, MT 599231386773190
- Jana Hall, MDLibby, MT 599231063523629
- Mark HeppeLibby, MT 599231346368628
- Clyde Knecht, MDLibby, MT 599231295823979
- Michael Mahoney, MDLibby, MT 599231588766273
- Jay Maloney, MDLibby, MT 599231679602486
- Nina Petrosyan, MDLibby, MT 599231225667736
Common questions
What is Daniel Williams's NPI number?
Daniel Williams's National Provider Identifier (NPI) is 1184155442, issued on Mar 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Williams located?
The NPPES record lists a practice address at 320 E 2ND St, Libby, MT, 59923. Phone: (406) 283-6919. Providers update this record themselves, so call before visiting.
How can I verify Daniel Williams's license?
NPPES lists Montana license number MED-PHYS-LIC-86997, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Daniel Williams prescribe under Medicare Part D?
In 2024, Daniel Williams had 5,414 Medicare Part D claims for 379 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.